Gemstone



FIG. 1 is a perspective view of the gemstone taken from the bottom side;

FIG. 2 is bottom plan view thereof;

FIG. 3 is a front elevational view of the gemstone, the rear elevational view being a mirror image thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a side elevational view of the gemstone, the opposite side being a mirror image thereof. 

CLAIM The ornamental design for a gemstone, as shown and described herein. 